Find all complex-number solutions. Write solutions in terms of $\displaystyle {i}$

$\displaystyle {x}^{{2}}=-{36}$

$\displaystyle {x}=$Preview Question 6  

Entry Tip: Do not use a decimal approximation for square roots. To enter a number like $\displaystyle {5}{i}\sqrt{{{7}}}$, type 5 i sqrt(7). Preview your answer before submitting!

Furthere Tip: Write your answers as a list, with your answers separated by (a) comma(s). For example, if you get $\displaystyle {4}$ and $\displaystyle -\frac{{2}}{{3}}$ as your answers, then enter 4,-2/3 in the box.